Bush takes another dig at Rubio: 'I don't have a height issue'

Jeb Bush dug a bit deeper into Marco Rubio on Wednesday, taking a veiled shot at his Republican opponent's record and another dig at his height, a day after a super PAC supporting him released an ad alleging that the Florida senator has flip-flopped while alluding to the high-heeled boots he wore in New Hampshire earlier this month.

On Tuesday, the pro-Bush super PAC Right to Rise unveiled a digital-only ad knocking Rubio for his absence from the Senate and other policy decisions. (One of the lines, to the tune of "These Boots Are Made for Walkin'": "You keep leavin’ when you oughta be votin’. Now what’s work is work, but you ain’t earned it yet").

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“Look, I think we need leaders that run to the challenge, run to the fire to try to solve the problem rather than cut and run if there’s a problem," Bush said in an interview on MSNBC's "Morning Joe" from the trail in Ankeny, Iowa. "And there are a lot of elected officials these days that don’t accept responsibility for the challenges that we face. I’m a problem solver. I see a problem, and I accept responsibility and try to fix things. I don’t say the dog ate my homework or there’s, you know, someone else’s fault."

That, Bush added, is an important point, because "we’re not electing a backbencher to the United States Senate. We’re electing president of the United States, which means you have to lead.”

While offering the usual caveat that neither he nor his campaign coordinated with the super PAC, Bush remarked that the ads have been "pretty tame so far compared to previous election cycles."

“Yeah, but Jeb, do you own any platform boots that make you taller?" co-host Joe Scarborough asked, to which Bush responded, "I got my cowboy boots on, big Joe." (Bush is 6'3'' to Rubio's 5'10").

“Do they make you three inches taller or are they just normal cowboy boots?” Scarborough followed up. “I don’t have a height issue," Bush added.